Alexandee bluhm



Aug. 28, 1928. 1,682,319

A. BLUHM morne MEMBER Fon BRAKES AND'THE'LIKE Filed Deo. 51, 1926 /NvENTDR Patented Aug. 28, 1928.

UNITED STATES PATENT ori-fica.

ALEXANDRE BLUHM, or rAnrs, FRANCE, AssIGNon 'ro soeIE'rE ANONYME :eRANeAIsE nu r-Enono, or rAms, FRANCE.

FACING MEMBER FOR BRAKES lAND THE LIKE.

Application'led December 31, 1926, Serial No. 158,375, and in France January 13, 1926.

The facing members of brakes or friction clutches are usually secured to their support,

such as the-"brake shoe, clutch cone or the like by means of rivets, screws or pins. But when the facingmember becomes settled in place or is sub]ect to wear,` the heads of the screws or rivets will project from this facing, thus producin a friction of one metal upon another which offers great prejudice to the parts of the brake or the clutch.

The present inventionrelates to brakes or clutches in which the facing members are secured byan autogenous cementing prooess whereby the aforesaid defects arel obviated, and it has for its object suitable elements for brakes or clutches which are provided with their friction facings which are caused to adhere thereto by the autogenous cementing process, and are ready for use upon a ,brake or clutch, and in this manner the said elements may be readily replaced when the facing becomes worn.

In the case of a brake which for example comprises brake shoes pivotally mounted upon a support disposed in the interior or at the exterior of a brake drum, as in the usual automobile or like brakes, the invention consists iny the preliminary manufacture of brake shoes which comprise a facing member directly cemented to the shoes, and which may be r`thus mounted at once in all brake drums of the corresponding type; or otherwise, the invention consists in the manufacture of curved members or plates provided with a cemented facing, and adapted for mounting upon the brake shoes by bolts or screws whose heads will not project from the said facing. In the case of clutches or of brakes havlng tapered friction surfaces, the said elements according to the invention will consist of cones or segments of cones upon which the facing is mounted by direct adhesion, or of metallic rings or segments which are removably mounted upon suitable.

cones, and which have been preliminarily provided with cemented facings.

In all cases, the invention will offer the advantage of a rapid substitution of the parts when worn out, and will further ob-k viate all risk of wear of the friction members by metallic pieces which may traverse the facing.

Another important feature of the invention consists in thepractical use ofi facings cemented by the autogenous process by `main support 3 means of synthetic resin or like substance, which process can hardly be employed except in a specially equipped factory, by reason of the outfit and the operations re uired.

The appended drawings show y way of example a sectional view of a facing device in accordance with .the invention.

1 is the facing member which is cemented to an intermediate support 2 by the use ofA glue or any other suitable adhesive substance, such as synthetic resin or the like. The suport 2 herein consists of a metal plate, and 1t has preferably the same curvature as the upon -which it is to be mounted. l A

To secure the support 2, it may be provided with countersunk holes 4 for the insertion of the rivets l5, or preferably 4of screws which are optionally provided with lock nuts, or of bolts with countersunk heads. Adjacent the rivets, screws or bolts, the facing 1 is pierced with the apertures 6 by which they may be put in place.

In these conditions, the facing member 1 and its support 2 will form a single piece which may be preliminarily manufactured to order at the factory, and which can be readily mounted upon an apparatus or can be replaced by another piece upon occasion by any person, whether a mechanic or repair man, or by the user of the apparatus.

In all cases, the facing 1` may be used to the extreme limit and throughout its entire thickness, without any dan er of contact between the rivet heads and t 1e brake drum.

I-Iaving thus described my apparatus, what I claim as new therein, and my own invention, is:

1. The combination of a braking or friction clutchingmember, avmetallic support upon the said member and a friction facing member cemented to the said support, the whole of the said support and said facing member beingsecured upon the said braking or friction clutching member, the said facing member and the said support being provided with holes, and fixing members passing through the said holes, the heads of the said lfixing members'being flush with the surface of the said support. y

2. A friction member comprising a metallic support and a friction facing whose composition comprises a binding material and-which is secured to said support,.the securing of the said friction facing on the f support being obtained by the cementing thetie resin the securing of the said facing process by means of the same binding maon the support being obtained by the cementterial. p l ing process by means of the same resin. 10 3. A friction member comprising a metal- In testimony whereof I have hereunto 5 lic support and a friction facing which is affixed my signature.

secured to said support and whose composition comprises an artificial resin called syn- ALEXANDRE BLUHM. 

